Well... First of all, what engine do you have, how do you use it and how well do you maintain it?

My '86 XJ has 200,650 total miles.

I bought the car with a rebuilt engine that has 30,000 miles on it. So, the first got 170,000 miles but that was a crappy GM V6 2.8.

From what I've seen, if you take care of your engine and don't abuse it it's not uncommon for a 4.0 Cherokee to get 220,000+ from the original engine. Although with proper care and use you can push 'em to 300,000.

I met a guy with a 2001 XJ who had 297,000 on his original drive train and had no problems at all. Of course, I don't think that Jeep ever saw dirt let alone four wheel drive.

Anyway, maximum miles are variable depending on how you drive, how you maintain your engine and sometimes they'll just get old and tired after a while.

I have the 2.5. I maintain it pretty well i think. I change the oil and all that good stuff. Mostly i just it back and forth to school but ocassionally ill take it off road. I dont do any off road trips or anything. I just take it where i want it to go at the time. It may be the highway or a log road. But i run it kinda hard on the highway sometimes. It already has 196,000 on it.
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GS850

Last edited by djgbsbj on Fri Feb 04, 2011 1:17 am; edited 1 time in total

I don't get much highway driving in. A co-worker has had a few 4.0's, they've driven most of them over 200k before trading up. The engine is not the mileage issue on these vehicles but things like front axle U-joints and track bars wearing out is common. So as long as you maintain the engine properly it will probably last longer than the rest of the vehicle. You'd most likely replace 50% of the Jeep before the engine dies. _________________Mike

I got a 95 with a 4.0 that has 312,000 miles on it and still drives like it did when it had 170,000 But has had it troubles, such as oil leakes, power steering fluid leakes, broken water pump and stuff. All yeah got to do is fix it tho and its like nothing ever was wrong!

current engine has 310 000 kms , the old one that still ran fine(till i tore it apart) had 305 000 miles, but only 100 psi in the front cylinder the rest were in spec , its a straight 6 flaw the water pump over cools the first cylinder and it wears faster .

got my moms old 98 4.0 with 89,000 oil changed every 2500 miles diff fluids every year or when i go thru water over my hubs (rarely florida cant keep water on the ground) spark plugs and airfilters and stuff like that checked constatly and it dont burn a bit of oil and the temp says below 190 and ive never hit rev limiter....im thinking ill hit 250.000 ...im getting a 07 megacab once my enlistment bonus hits the bank so the XJ will be my wheelin rig so ill have the HEEP for a while...._________________Jeep cherokee 98 4.0